Note
Go to the end to download the full example code.
Ship drift
from datetime import datetime
from opendrift.models.shipdrift import ShipDrift
o = ShipDrift(loglevel=20)
o.add_readers_from_list([
'https://thredds.met.no/thredds/dodsC/cmems/topaz6/dataset-topaz6-arc-15min-3km-be.ncml',
'https://thredds.met.no/thredds/dodsC/mepslatest/meps_lagged_6_h_latest_2_5km_latest.nc',
'https://thredds.met.no/thredds/dodsC/cmems/mywavewam3km/dataset-wam-arctic-1hr3km-be.ncml'
])
07:40:27 INFO opendrift.models.basemodel:515: OpenDriftSimulation initialised (version 1.11.13 / v1.11.13)
Seed ship elements at defined position and time Note: beam/length ratio is larger than allowed, but is then clipped internally
o.seed_elements(lon=5.0, lat=63.0, radius=1000, number=1000,
time=datetime.utcnow(),
length=80.0, beam=20.0, height=9.0, draft=4.0)
07:40:27 WARNING opendrift.models.shipdrift:181: Ratio of beam to length should be in range 0.12 to 0.18, given range is 0.25-0.25. Using border value.
07:40:27 INFO opendrift.models.basemodel.environment:218: Adding a dynamical landmask with max. priority based on assumed maximum speed of 2.0 m/s. Adding a customised landmask may be faster...
07:40:33 INFO opendrift.models.basemodel.environment:245: Fallback values will be used for the following variables which have no readers:
07:40:33 INFO opendrift.models.basemodel.environment:248: sea_surface_wave_stokes_drift_x_velocity: 0.000000
07:40:33 INFO opendrift.models.basemodel.environment:248: sea_surface_wave_stokes_drift_y_velocity: 0.000000
07:40:33 INFO opendrift.models.basemodel.environment:248: sea_surface_wave_significant_height: 0.000000
07:40:33 INFO opendrift.models.basemodel.environment:248: sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment: 0.000000
Running model
o.run(steps=24, stop_on_error=True)
07:40:33 INFO opendrift.models.basemodel:936: Using existing reader for land_binary_mask
07:40:33 INFO opendrift.models.basemodel:947: All points are in ocean
07:40:33 INFO opendrift.models.basemodel:2038: 2024-07-24 07:40:27.092801 - step 1 of 24 - 1000 active elements (0 deactivated)
07:40:33 INFO opendrift.readers.reader_netCDF_CF_generic:102: Opening dataset: https://thredds.met.no/thredds/dodsC/cmems/topaz6/dataset-topaz6-arc-15min-3km-be.ncml
/opt/conda/envs/opendrift/lib/python3.11/site-packages/pyproj/crs/crs.py:1286: UserWarning: You will likely lose important projection information when converting to a PROJ string from another format. See: https://proj.org/faq.html#what-is-the-best-format-for-describing-coordinate-reference-systems
proj = self._crs.to_proj4(version=version)
07:40:41 INFO opendrift.readers.reader_netCDF_CF_generic:314: Detected dimensions: {'x': 'x', 'y': 'y', 'time': 'time'}
07:40:41 INFO opendrift.readers.reader_netCDF_CF_generic:102: Opening dataset: https://thredds.met.no/thredds/dodsC/mepslatest/meps_lagged_6_h_latest_2_5km_latest.nc
/opt/conda/envs/opendrift/lib/python3.11/site-packages/pyproj/crs/crs.py:1286: UserWarning: You will likely lose important projection information when converting to a PROJ string from another format. See: https://proj.org/faq.html#what-is-the-best-format-for-describing-coordinate-reference-systems
proj = self._crs.to_proj4(version=version)
07:40:42 INFO opendrift.readers.reader_netCDF_CF_generic:314: Detected dimensions: {'time': 'time', 'x': 'x', 'y': 'y'}
07:40:42 INFO opendrift.readers.reader_netCDF_CF_generic:102: Opening dataset: https://thredds.met.no/thredds/dodsC/cmems/mywavewam3km/dataset-wam-arctic-1hr3km-be.ncml
/opt/conda/envs/opendrift/lib/python3.11/site-packages/pyproj/crs/crs.py:1286: UserWarning: You will likely lose important projection information when converting to a PROJ string from another format. See: https://proj.org/faq.html#what-is-the-best-format-for-describing-coordinate-reference-systems
proj = self._crs.to_proj4(version=version)
07:40:48 INFO opendrift.readers.reader_netCDF_CF_generic:314: Detected dimensions: {'y': 'rlat', 'x': 'rlon', 'time': 'time'}
07:40:58 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:40:58 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:40:59 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:40:59 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:00 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
07:41:00 INFO opendrift.models.basemodel:2038: 2024-07-24 08:40:27.092801 - step 2 of 24 - 1000 active elements (0 deactivated)
07:41:08 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:08 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:08 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
07:41:08 INFO opendrift.models.basemodel:2038: 2024-07-24 09:40:27.092801 - step 3 of 24 - 1000 active elements (0 deactivated)
07:41:10 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:10 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:11 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
07:41:11 INFO opendrift.models.basemodel:2038: 2024-07-24 10:40:27.092801 - step 4 of 24 - 1000 active elements (0 deactivated)
07:41:12 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:12 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:13 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
07:41:13 INFO opendrift.models.basemodel:2038: 2024-07-24 11:40:27.092801 - step 5 of 24 - 1000 active elements (0 deactivated)
07:41:15 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:15 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:15 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
07:41:15 INFO opendrift.models.basemodel:2038: 2024-07-24 12:40:27.092801 - step 6 of 24 - 1000 active elements (0 deactivated)
07:41:17 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:17 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:17 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
07:41:17 INFO opendrift.models.basemodel:2038: 2024-07-24 13:40:27.092801 - step 7 of 24 - 1000 active elements (0 deactivated)
07:41:19 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:19 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:20 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
07:41:20 INFO opendrift.models.basemodel:2038: 2024-07-24 14:40:27.092801 - step 8 of 24 - 1000 active elements (0 deactivated)
07:41:21 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:21 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:22 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
07:41:22 INFO opendrift.models.basemodel:2038: 2024-07-24 15:40:27.092801 - step 9 of 24 - 1000 active elements (0 deactivated)
07:41:23 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:23 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:24 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
07:41:24 INFO opendrift.models.basemodel:2038: 2024-07-24 16:40:27.092801 - step 10 of 24 - 1000 active elements (0 deactivated)
07:41:25 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:25 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:26 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
07:41:26 INFO opendrift.models.basemodel:2038: 2024-07-24 17:40:27.092801 - step 11 of 24 - 1000 active elements (0 deactivated)
07:41:28 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:28 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:29 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
07:41:29 INFO opendrift.models.basemodel:2038: 2024-07-24 18:40:27.092801 - step 12 of 24 - 1000 active elements (0 deactivated)
07:41:30 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:30 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:31 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
07:41:31 INFO opendrift.models.basemodel:2038: 2024-07-24 19:40:27.092801 - step 13 of 24 - 1000 active elements (0 deactivated)
07:41:33 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:33 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:33 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
07:41:33 INFO opendrift.models.basemodel:2038: 2024-07-24 20:40:27.092801 - step 14 of 24 - 1000 active elements (0 deactivated)
07:41:35 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:35 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:35 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
07:41:35 INFO opendrift.models.basemodel:2038: 2024-07-24 21:40:27.092801 - step 15 of 24 - 1000 active elements (0 deactivated)
07:41:37 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:37 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:38 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
07:41:38 INFO opendrift.models.basemodel:2038: 2024-07-24 22:40:27.092801 - step 16 of 24 - 1000 active elements (0 deactivated)
07:41:39 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:39 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:40 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
07:41:40 INFO opendrift.models.basemodel:2038: 2024-07-24 23:40:27.092801 - step 17 of 24 - 1000 active elements (0 deactivated)
07:41:45 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:45 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:46 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
07:41:46 INFO opendrift.models.basemodel:2038: 2024-07-25 00:40:27.092801 - step 18 of 24 - 1000 active elements (0 deactivated)
07:41:47 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:47 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:50 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
07:41:50 INFO opendrift.models.basemodel:2038: 2024-07-25 01:40:27.092801 - step 19 of 24 - 1000 active elements (0 deactivated)
07:41:52 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:52 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:53 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
07:41:53 INFO opendrift.models.basemodel:2038: 2024-07-25 02:40:27.092801 - step 20 of 24 - 1000 active elements (0 deactivated)
07:41:54 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:54 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:55 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
07:41:55 INFO opendrift.models.basemodel:2038: 2024-07-25 03:40:27.092801 - step 21 of 24 - 1000 active elements (0 deactivated)
07:41:56 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:56 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:57 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
07:41:57 INFO opendrift.models.basemodel:2038: 2024-07-25 04:40:27.092801 - step 22 of 24 - 1000 active elements (0 deactivated)
07:41:58 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:58 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:41:59 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
07:41:59 INFO opendrift.models.basemodel:2038: 2024-07-25 05:40:27.092801 - step 23 of 24 - 1000 active elements (0 deactivated)
07:42:00 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:42:00 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:42:01 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
07:42:01 INFO opendrift.models.basemodel:2038: 2024-07-25 06:40:27.092801 - step 24 of 24 - 1000 active elements (0 deactivated)
07:42:02 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:42:02 WARNING opendrift.readers.interpolation.structured:46: Ensemble data currently not extrapolated towards seafloor
07:42:03 INFO opendrift.models.shipdrift:311: Using Stokes drift direction as wave direction
Print and plot results
print(o)
o.plot(linecolor='orientation')
#o.animation(color='orientation', markersize=20, filename="orientation.gif", legend=['left','right'],colorbar=False,cmap='bwr')
o.animation(color='orientation', legend=['left','right'], markersize=20, colorbar=False, cmap='bwr')
===========================
--------------------
Reader performance:
--------------------
global_landmask
0:00:00.0 total
0:00:00.0 preparing
0:00:00.0 reading
0:00:00.0 masking
--------------------
https://thredds.met.no/thredds/dodsC/cmems/topaz6/dataset-topaz6-arc-15min-3km-be.ncml
0:00:28.2 total
0:00:00.0 preparing
0:00:28.0 reading
0:00:00.0 interpolation
0:00:00.0 interpolation_time
0:00:00.2 rotating vectors
0:00:00.0 masking
--------------------
https://thredds.met.no/thredds/dodsC/mepslatest/meps_lagged_6_h_latest_2_5km_latest.nc
0:00:27.8 total
0:00:00.0 preparing
0:00:27.6 reading
0:00:00.2 interpolation
0:00:00.0 interpolation_time
0:00:00.2 rotating vectors
0:00:00.0 masking
--------------------
https://thredds.met.no/thredds/dodsC/cmems/mywavewam3km/dataset-wam-arctic-1hr3km-be.ncml
0:00:18.0 total
0:00:00.0 preparing
0:00:17.8 reading
0:00:00.0 interpolation
0:00:00.0 interpolation_time
0:00:00.2 rotating vectors
0:00:00.0 masking
--------------------
Performance:
1:36.5 total time
6.5 configuration
0.0 preparing main loop
0.0 moving elements to ocean
1:30.0 main loop
0.6 updating elements
0.0 cleaning up
--------------------
===========================
Model: ShipDrift (OpenDrift version 1.11.13)
1000 active ShipObject particles (0 deactivated, 0 scheduled)
-------------------
Environment variables:
-----
land_binary_mask
1) global_landmask
-----
x_sea_water_velocity
y_sea_water_velocity
1) https://thredds.met.no/thredds/dodsC/cmems/topaz6/dataset-topaz6-arc-15min-3km-be.ncml
2) https://thredds.met.no/thredds/dodsC/cmems/mywavewam3km/dataset-wam-arctic-1hr3km-be.ncml
-----
x_wind
y_wind
1) https://thredds.met.no/thredds/dodsC/mepslatest/meps_lagged_6_h_latest_2_5km_latest.nc
-----
sea_surface_wave_mean_period_from_variance_spectral_density_second_frequency_moment
sea_surface_wave_significant_height
sea_surface_wave_stokes_drift_x_velocity
sea_surface_wave_stokes_drift_y_velocity
1) https://thredds.met.no/thredds/dodsC/cmems/mywavewam3km/dataset-wam-arctic-1hr3km-be.ncml
Discarded readers:
Time:
Start: 2024-07-24 07:40:27.092801 UTC
Present: 2024-07-25 07:40:27.092801 UTC
Calculation steps: 24 * 1:00:00 - total time: 1 day, 0:00:00
Output steps: 25 * 1:00:00
===========================
07:42:39 INFO opendrift.models.basemodel:4608: Saving animation to /root/project/docs/source/gallery/animations/example_shipdrift_0.gif...
07:43:59 INFO opendrift.models.basemodel:3037: Time to make animation: 0:01:24.187766
Total running time of the script: (3 minutes 43.937 seconds)